Coal mining at the Smoky River minesite, Mclntyre Mines Limited

Abstract
This paper details the highlights of the open-pit and underground operations of Mclntyre Mines Limited in the Smoky River area of Alberta. Mining methods, operating equipment and manpower are outlined, followed by a discussion of reclamation and environmental control.

This paper is based on work done by the authors in a study of the structural features at a quarry excavated in Chazy limestone on the Island of Montreal. Observations on failures on the quarry walls and benches were recorded, and back-analyses of small-scale failures were carried out, thus enabling an assessment to be made of the in-situ strength properties of the rock. Using this information, and data from shear tests in the laboratory, the authors made an analysis of the stability of the...

There is a considerable resource of data for spherical charge cratering, both as single&nbsp; charges&nbsp; and&nbsp; in&nbsp;&nbsp; row-of-charge geometry. The data are, however, based on cratering performance to a single free planar surface.In practice, the more common circumstance involves an angular surface geometry, such as occurs at the toe of a bench or the wall of aslope. It is for the purpose of investigating this circumstance that the described test work was conducted.The test...

The objectives of the Wabush Mines tailings stabilization program are to control dust lift-off and to rehabilitate the disposal area. The evolution of the program started with test plots in 1970, these being continued and expanded upon through 1974. In 1976, a 35-acre vegetation field trial was attempted and failed, part of the failure being attributed to lack of adequate equipment. Subsequently, equipment was purchased and during the summer of 1979-80 extensive areas were treated. The...

This paper briefly outlines the characteristics which should be considered in assessing the economics of mineral exploration, and illustrates such an assessment by using data from the Canadian base metal sector. Implications for the sector are found to include the following:

base metal exploration has the potential to create a substantial amount of new wealth; &nbsp;investment incentive for exploration under current conditions is not unattractive over-all; because of existing...

Originally intended to be implemented in 1977, but actually introduced effective May 6, 1974, the earned depletion regulations have been substantially refined and modified since their appearance on the Canadian tax scene, so that this important legislation now consists of a highly complicated set of rules which even the most astute follower of tax law has considerable difficulty sorting out!This month, Tax Notes attempts to cut through this bewildering array of regulations, in reviewing the...